Clay County Soil Data
Clay County, West Virginia
USDA SSURGO / PHZMAvg pH
5.6
Texture
Loam
Drainage
N/A
Organic Matter
38.1%
Hydrologic Group
N/A
Data Story
About Soil in Clay County, West Virginia
The Young Entisols of Clay
Clay County's landscape is dominated by Entisols, which are young soils without well-developed layers. The average pH is 5.57, sitting slightly above the state average of 5.25 but below the national 6.5 median. These soils are often found on steep slopes where erosion prevents older soil formation.
A Silty, Low-Clay Foundation
The soil composition includes 26.6% silt and 18.5% sand, providing a relatively fine texture. With only 10.2% clay, the soil is less prone to becoming a heavy, sticky mess during the rainy season. This low clay content makes the soil easier to dig but may require more frequent fertilization.
Massive Organic Matter Reserves
Clay County features a staggering 38.08% organic matter, nearly twenty times the national average of 2.0%. Paradoxically, the available water capacity is low at 0.099 in/in, well below the state average of 0.142. This means the soil is incredibly rich in nutrients but may dry out faster than expected.
Drainage in Steep Terrain
No specific drainage class or hydrologic group is recorded for the county. Given the low water capacity and high organic content, water may move through the surface layer quickly. Careful monitoring of soil moisture is vital for success in this unique soil environment.
Lush Gardening in Zone 6b
In Hardiness Zone 6b, Clay County is well-suited for woodland crops like ramps and ginseng. The extreme organic richness is a dream for raised bed gardening where you can control moisture levels. Start your garden today and harness the power of this nutrient-dense mountain soil.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Hydrologic group data not available.
Drainage Class
Drainage class data not available.
Soil Profile
Dominant texture: Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Acidic Soil Detected
Your county's average pH is 5.6. These products help balance soil pH for healthier grass.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Clay County have?
Clay County's soil is classified as Loam. This indicates the relative proportions of sand, silt, and clay — 19% sand, 27% silt, and 10% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Clay County's soil acidic or alkaline?
Clay County's soil has a pH of 5.6, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Clay County?
Drainage class data is not currently available for Clay County.
What crops or plants grow well in Clay County's soil?
Based on Clay County's Loam texture, pH of 5.6, and drainage class, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens.
What USDA soil order is found in Clay County?
Clay County's dominant soil order is Entisols. Entisols are recently formed soils with little to no horizon development. They are common on floodplains, steep slopes, and sandy deposits.
Soil & Planting Advisory: Clay County
Soil Verdict
Clay County is in USDA hardiness zone 6b, a moderate climate zone. where winter lows can reach -5°F. Freeze-thaw cycles are moderate; soil biology slows in winter but recovers reliably in spring, supporting a broad range of plants.
Planting Guidance
A wide plant palette is possible: deciduous trees, most shrubs, cool-season vegetables, and many perennials thrive here. Winter protection (mulch, burlap wraps) helps push the zone boundary for desired species. Always match plant selections to the specific microclimate of your property — low spots, slopes, and wind exposure can shift effective hardiness by half a zone.
Soil Implications
Moderate freeze-thaw cycles naturally aerate the soil but can also cause compaction in clay-heavy areas; annual core aeration is beneficial. Organic matter amendments decompose at a moderate pace — aim for 3-5% organic content for optimal fertility. When soil temperatures drop below freezing, microbial nitrogen cycling stops; spring fertilization is more effective than late-fall application.
Regional Context
Clay County closely matches the West Virginia average hardiness conditions. The zone range of 6b-7a within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Clay County on LawnByCounty.com →
Other Counties in West Virginia
Soil data sourced from USDA SSURGO via Soil Data Access. Data is informational only and should not be used as a substitute for on-site soil testing. Contact your local NRCS office for site-specific soil information.